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Abstract: mainly introduces a high power double-drag type mine elevator research and application of variable frequency speed-regulating device, using vector control technology, realized the promotion process of frequency conversion speed control.

Abstract: Mainly introduced one kind of high efficiency dragging mine pit elevator frequency conversion speeder research and the application, use the vector control technology, realized has promoted the entire process frequency conversion velocity modulation control.

Summary: main introduced a high-powered double-machine drag-type mine hoist machine frequency control devices used in research and applications, and vector control technology upgrade throughout the process, and achieved a frequency control.

Abstract: mainly introduces a high power double-drag type mine elevator research and application of variable frequency speed-regulating device, using vector control technology, realized the promotion process of frequency conversion speed control.